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grpc-client-cli vs Warthog: catalog facts
grpc-client-cli	Warthog
Free Free to download from its GitHub repository.	Free Free to download from GitHub.
macOS, Linux, Command line	Windows, macOS, Linux
Discovers services and methods through gRPC reflection Works with proto files when reflection is off	Automatic parsing of proto definitions into input forms Several authentication methods, including JWT and GCE
Command-line only, no graphical interface Smaller project with a single main maintainer	gRPC only, no REST or GraphQL Small project with a small user base
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.